Qawwali (Uru/Persian: قوٌالی; Punjabi/Multani: ਖ਼ਵ੍ਵਾਲੀ, قوٌالی; Brajbhasha/Hindi: क़व्वाली) is a form of Sufi devotional music popular on the Indian subcontinent. It's a vibrant musical tradition that stretches back more than 700 years. Originally performed mainly at Sunni Sufi shrines throughout the subcontinent, it has also gained mainstream popularity. Qawwali music received international exposure through the work of the late Nusrat Fateh Ali Khan, largely due to several releases on the Real World label, followed by live appearances at WOMAD festivals. Often listeners, and even artists themselves, are transported to a state of wajad, a trance-like state where they feel at one with God, generally considered to be the height of spiritual ecstasy in Sufism. Although famous throughout the world, its economic and spiritual hub remains the Punjab province of Pakistan from where it gained entry into the mainstream commercial music industry and international fame.